Add support for zstd compressed .zst files (Bug 2515)

[exim.git] / src / src / exigrep.src

diff --git a/src/src/exigrep.src b/src/src/exigrep.src
index 45bdc2c80cffe3bafc2f2cfa08773fc37b4e4b8a..835766fb465d83c0c3c10e532b99b137538fba01 100644 (file)
--- a/src/src/exigrep.src
+++ b/src/src/exigrep.src
@@ -5,9 +5,10 @@ use strict;
 BEGIN { pop @INC if $INC[-1] eq '.' };
 
 use Pod::Usage;
-use Getopt::Long;
+use Getopt::Long qw(:config no_ignore_case);
+use File::Basename;
 
-# Copyright (c) 2007-2015 University of Cambridge.
+# Copyright (c) 2007-2017 University of Cambridge.
 # See the file NOTICE for conditions of use and distribution.
 
 # Except when they appear in comments, the following placeholders in this
@@ -45,7 +46,7 @@ use POSIX qw(mktime);
 
 sub seconds {
 my($year,$month,$day,$hour,$min,$sec,$tzs,$tzh,$tzm) =
-  $_[0] =~ /^(\d{4})-(\d\d)-(\d\d)\s(\d\d):(\d\d):(\d\d)(?>\s([+-])(\d\d)(\d\d))?/o;
+  $_[0] =~ /^(\d{4})-(\d\d)-(\d\d)\s(\d\d):(\d\d):(\d\d)(?:.\d+)?(?>\s([+-])(\d\d)(\d\d))?/o;
 
 my $seconds = mktime $sec, $min, $hour, $day, $month - 1, $year - 1900;
 
@@ -83,7 +84,7 @@ sub do_line {
 if (!/^\d{4}-/o) { $_ =~ s/^.*? exim\b.*?: //o; }
 
 return unless
-  my($date,$id) = /^(\d{4}-\d\d-\d\d \d\d:\d\d:\d\d (?:[+-]\d{4} )?)(?:\[\d+\] )?(\w{6}\-\w{6}\-\w{2})?/o;
+  my($date,$id) = /^(\d{4}-\d\d-\d\d \d\d:\d\d:\d\d(?:\.\d+)? (?:[+-]\d{4} )?)(?:\[\d+\] )?(\w{6}\-\w{6}\-\w{2})?/o;
 
 # Handle the case when the log line belongs to a specific message. We save
 # lines for specific messages until the message is complete. Then either print
@@ -124,7 +125,7 @@ if (defined $id)
   if (index($_, 'Completed') != -1 ||
       index($_, 'SMTP data timeout') != -1 ||
         (index($_, 'rejected') != -1 &&
-          /^(\d{4}-\d\d-\d\d \d\d:\d\d:\d\d (?:[+-]\d{4} )?)(?:\[\d+\] )?\w{6}\-\w{6}\-\w{2} rejected/o))
+          /^(\d{4}-\d\d-\d\d \d\d:\d\d:\d\d(?:\.\d+)? (?:[+-]\d{4} )?)(?:\[\d+\] )?\w{6}\-\w{6}\-\w{2} rejected/o))
     {
     if ($queue_time != -1 &&
         $saved{$id} =~ /^(\d{4}-\d\d-\d\d \d\d:\d\d:\d\d ([+-]\d{4} )?)/o)
@@ -158,7 +159,8 @@ my $compressors = {
   gz   => { cmd => 'zcat',  args => '' },
   bz2  => { cmd => 'bzcat', args => '' },
   xz   => { cmd => 'xzcat', args => '' },
-  lzma => { cmd => 'lzma',  args => '-dc' }
+  lzma => { cmd => 'lzma',  args => '-dc' },
+  zst  => { cmd => 'zstdcat', args => '' },
 };
 my $csearch = 0;
 
@@ -229,6 +231,12 @@ GetOptions(
             -noperldoc => system('perldoc -V 2>/dev/null >&2')
         );
       },
+      'version'        => sub {
+            print basename($0) . ": $0\n",
+                "build: EXIM_RELEASE_VERSIONEXIM_VARIANT_VERSION\n",
+                "perl(runtime): $]\n";
+            exit 0;
+      },
 ) and @ARGV or pod2usage;
 
 $pattern = shift @ARGV;
@@ -237,13 +245,15 @@ $pattern = quotemeta $pattern if $literal;
 # Start a pager if output goes to a terminal
 if (-t 1 and $use_pager)
   {
-  foreach ($ENV{PAGER}//(), 'less', 'more')
+  # for perl >= v5.10.x: foreach ($ENV{PAGER}//(), 'less', 'more')
+  foreach (defined $ENV{PAGER} ? $ENV{PAGER} : (), 'less', 'more')
     {
+    local $ENV{LESS} .= ' --no-init --quit-if-one-screen';
     open(my $pager, '|-', $_) or next;
     select $pager;
     last;
     }
-}
+  }
 
 # If file arguments are given, open each one and process according as it is
 # is compressed or not.
@@ -304,8 +314,8 @@ given host, for example.
 
 If no file names are given on the command line, the standard input is read.
 
-For known file extensions indicating compression (F<.gz>, F<.bz2>, F<.xz>, and F<.lzma>)
-a suitable de-compressor is used, if available.
+For known file extensions indicating compression (F<.gz>, F<.bz2>, F<.xz>,
+F<.lzma>, and F<.zst>) a suitable de-compressor is used, if available.
 
 The output is sent through a pager if a terminal is connected to STDOUT. As
 pager are considered: C<$ENV{PAGER}>, C<less>, C<more>.
@@ -345,7 +355,7 @@ Do not use a pager, even if STDOUT is connected to a terminal.
 =item B<-h>|B<--help>
 
 Print a short reference help. For more detailed help try L<exigrep(8)>,
-or C<exigrep -m>.
+or C<exigrep --man>.
 
 =item B<-m>|B<--man>